Excavator scoop and carrier therefor



Dec. 9, 1924- 1,518,314

R. R. DowNlE EXCAVATOR SCOOP AND CARRIER THEREFOR Filed June 27, 1921 2 Sheets-Sheet l INVENj- OR WITNEssEs ATTORNEY R. R. DowNlE ExcAvAToR scooP AND CARRIER THEREFOR 2 Sheets-Sheet 2 Del?. 9

Filed June 27, 1921 INVENTOR) WiTNEsSES I ATTORNEY Patented Dec. 9, 1924.

UNITED STATES PATENT oEFlcE.

ROBERT REX DOWNIE, 0F BEAVER FALLS, PENNSYLVANIA, ASSIGNOR T0 KEYSTONE DBILLEB COMPANY, 0F BEAVER FALLS, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

'.EXCAVATOR. SCOOP AND CARRIER THEREFOR.

Application nled June 27, 1921.

To all whom it may concern:

Be it known that I, ROBERT REX Dowmn, a citizen of the United States, residing at Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented a new and useful Excavator Scoop and Carrier Therefor, of which the following is a speciA iication.

rlhis invention has reference to excavating scoops and supports therefor, and its object is to reduce the number of parts entering into the latching portion of the scoop to thereby eliminate the possibility of misalinement, which is present when the latch means are multiplied. The invention also contemplates an improved connection between the ditcher stick and the scoop, permitting the use of scoops of different widths with the same stick whereby the cost of the structure is correspondingly reduced. The invention also contemplates the employment of outside' hangers between the ditcher stick and the scoop whereby to avoid the necessity of slots inthe scoop shell and making the scoop mud-tight.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying` drawings, forming a p-art of this specification, with the understanding, however, that the invention is not confined to any strict conformity to the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departures from the salient features of the invention as expressed in the appended claims.

In the drawings Fig. 1 is an elevation of the scoop end of a ditching machine, embodying the invention.

Fig. 2 is a front elevation of the structure shown in Fig. 1. v

Fig. 3 is a vertical, intermediate section of the structure shown in Fig. 1.

Fig. 4 is a section on the line 4-4 of Fig. 1, with the scoo omitted.

Referring to t e drawings, there is shown Serial No. 480,718.

la boom 1, which need not differ from boom constructions as ordinarily employed in ditching machines, and con uently requires no special description. T e boom is usually of double channel metal construction with end extensions 2, which at the Outer ends are traversed by a pivot bolt 3 supported in journal bearings or brackets 4.

The brackets 4 are made fast by bolts 5 to spaced channel beams 6 held apart by plates 7 riveted or otherwise secured to the beams 6, which latter constitute a ditcher stick.

Pivoted to one end of the ditcher stick, by a bolt 8, and also joined by said bolt, are angle bars 9, connected intermediately of their length by a cross brace 10. At the ends remote from the bolt 8 these angle bars carry a sheave 11 receiving a hoisting line 12 which is assumed to reach to the body of the ditcher, after the usual practice. Claim for these angle bars carrying a sheave is made in my companion application, No. 480,719, filed June 27, 1921.

At the end of the ditcher stick remote from the boom 1 and sheave 11, the beams 6 are riveted to transverse plate 7a which project beyond the beams at each side, as shown in Fig. 4. To the outer ends of the plate 7EL are bolted the extension plates 12a which `are of a length to extend far enough to reach the side plates of the scoop whatever may be the width of the latter. Each extension plate 12a has bolted thereto, at the outer end, an angle plate 12", and riveted to and connecting the angle plates is a hanger bar 13 lengthwise of the beam 6, but spaced therefrom by the width of the plates 12l and the extended ends of the plates 7*, said bars extending along opposite sides of the scoop, which latter is shown at 14.

By this construction, the substitution of different lengths of plates for the extension plates 12a enables the ditcher stick to be used with scoops of different Widths. 'This is one of the novel features of the present invention.

The scoo i has a body portion 15, which may be of s eet metal curved about a single axis 16 and with a prolonged bottom portion 17, all inone piece, or 1n e'ectively one piece, with the front of the scoop open as indicated at 18 in Fig. 3, and the forward edge of the bottom portion 17 armed with forwardly-projectin teeth 19, and with side shearino teeth 20. oreover, the sides, bottom and back of the scoop are reinforced by suitable angles 21, while the mouth of the scoop has reinforcements 22. i

At the axis 16 of the scoop are riveted Vreinforcing plates 23 through which, as well as through the bars 13, the plvot pins or trunnions 24, are passed, both sustainin the scoop and permitting it to be rocked a out the axis 16.

At the back of the scoop at a point about midway of the height and width thereof is a sin le angle bracket 25'serving as a stop, and t is bracket may, if desired, be riveted to the scoop on its outer surface, so that 1t may engage another stop 26 at the bottom of the ditcher stick, wherefore, when the stops 25 and 26 engage, further rocking movement of the scoop in the samedirection is arrested. (See Fig. 3.)

Fast to opposite sides of the front of the open scoop is a bail 27, connected to a link or clevis 28, having an end of a hauling l1ne 29 attached to it. The hauling line is used to draw the scoop inwardly toward the machine in order to fill the scoop.

On that side of the ditcher stick toward the body of the ditching machine are spaced guide brackets 3 0, secured to the ditcher stick lengthwise thereof and in alinement one with the other, and carrying a single latch Abar 31, extending through the guide brackets 30. Between these brackets the latch bar is surrounded by a spring 32 tending to force the latch toward the scoop. The latch bar 31 is carried at its upper end by a chain or other flexible member 33, which is made fast to a rock arm 34 on a rock shaft 35 journaled in the ditcher stick crosswise thereof. At one end the rock shaft 35 has a manipulating arm 36, which may be formed by bending the shaft at right angles on itself, and attached to the free end of the arm 36, is a line 37 whereby the shaft 35 may be rocked to lift the latch out of thepath of a keeper or stop 38, fast on top of the scoop. By arranging the latch and the keeper or stop midway of the width ofthe scoop (Fig. 2), instead of employing two latches and two stops at the sides of the scoop, there is eliminated the possibility of misa-linement which is present in the doubleilatch.

- The ditcher stick is a built-up structure so that the width of the scoop end may be enlarged as to width to accommodate scoops 14 of different sizes, and this may be done at a minimum cost. The trade demands that such scoops be built in various widths, which may range ,from 12 inches to 42 inches, and most purchasers of ditching machines have occasion to use two or more sizes of scoops, so that it is advantageous to sujply such demand to the purchaser.

e hanger bars 13 are placed outside the scoop so as to avoid the necessity of making slots in the scoop body, which slots are objectionable in that they deprive the scoop of the advantage of mud-tightness.

What is claimed is: i

1. In a ditching machine, a boom, a

ditcher stick pivotally carried by the boom, and a scoop connected to the ditcher stick at the end of the latter remote from the boom, said stick having connections to the scoop, said-connections being selectively va ried in width to accommodate the stick to receive scoops of different widths. 2. In a ditching machine, a boom, a ditcher stick pivotally carried by the boom at the outer end, and a scoop rockably mounted on the end of the ditcher stick remote from the boom, the stick being of constant width, and means connecting the scoop to the end of the stick, said connecting means being selectively varied in width to accommodate the stick to receive scoops of different widths.

3. In a ditching machine, the combination of a ditcher stick composed of a pair of beams and means for connecting said beams .inv spaced-apart relation, with plates secured to the ends of the beams and projecting therefrom at each side, extension plates bolted to said plates and projecting away from the beams, angle plates bolted to the extension plates at the ends thereof, hanger bars connecting said angle plates and depending therefrom, and a scoop connected to the lower ends of said hanger bars between the same.

4. In a ditching machine, the combination of a ditcher stick, plates secured to the ends thereof and projecting therefrom at each side, extension plates bolted to the outer ends of said plates and projectin away from said stick, hanger bars connected to said extension plates and projectin downwardly, said hanger bars being spaced apart by said plates a sufficient distance to accommodate a scoop between the same, and scoop connected to the lower ends of said ars.

5. In a ditching machine, the combination with a scoop, of a ditcher stick composed of spaced-apart beams connected together, hanger bars connected to the outside of the scoop, and a connection between the hanger bars and the ditcher stick, said connection consisting of extension plates of a length to space the hanger bars laterally from the ditcher stick to accord with the width of the scoop.

6. In a ditching machine, the combination with a scoop, of a ditcher stick composed of spaced-apart beams .connected together, vertical hanger bars connected to the outside of the scoop at each side, and means for rigidly connecting the hanger bars to 5 the ditcher stick to provide initially for scoops of different Widths, said means comprising extension plates between the ditcher stick and said hanger bars which laterally space said parts from each other.

In testimony, that I claim the foregoing 10 as my own, I have hereto aiixed my signature.

ROBERT REX DOWN IE. 

